Segment Information - Financial Information by Segment (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($)	Mar. 31, 2022 segment	Mar. 31, 2022 numberOfSegment	Mar. 31, 2021 USD ($)
Segment Reporting [Abstract]
Number of reportable segments		2	2
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenue	$ 2,406,952			$ 2,326,534
Operating income:	61,059			146,692
Intangible amortization	(10,300)			(10,000)
Acquisition-related and exit and realignment charges	(33,548)			(5,963)
Depreciation and amortization	24,125			22,900
Consolidated capital expenditures	10,961			6,623
Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenue	2,406,952			2,326,534
Operating Segments | Products & Healthcare Services
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenue	2,134,041			2,109,445
Operating income:	89,083			150,418
Depreciation and amortization	18,994			19,160
Consolidated capital expenditures	10,643			6,464
Operating Segments | Patient Direct
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenue	272,911			217,089
Operating income:	15,793			12,263
Depreciation and amortization	5,131			3,740
Consolidated capital expenditures	318			159
Segment Reconciling Items
Segment Reporting, Revenue Reconciling Item [Line Items]
Intangible amortization	(10,269)			(10,026)
Acquisition-related and exit and realignment charges	$ (33,548)			$ (5,963)